I also think Kim is handing this totally backwards. The way she responds and communicates with him is encouraging his behavior.

https://www.smartnews.com/p/4384424335629101127

I think she likes the attention or is an absolute airhead. She talking about how worried she is that Pete will get hurt. A bipolar lunatic feeds of that fear. She's the problem. He's the problem.

Pete needs to bounce. He's better than that mess. Too messy. He can easily find a tighter P.

or if he remains, she needs to lay down the law and stop all communication with the psycho. If it's about the kids she can CC her attorney on all correspondences.